which of the following was true for the system between time t1 and time t2? (a) the concentration of n2 decreased. (b) the temperature of the system decreased. (c) the number of effective collisions between h2 and n2 was zero. (d) the rates of the forward and reverse reactions were equal. (e) the rate of formation of nh3 molecules was equal to the rate of disappearance of h2 molecules.

Answer:

T-A-A-C-G-A or just TAACGA

Explanation:

A=T

G=C

C=G

T=A

This is the answer key to all complementary DNA strands.

Hope this helps you out.

Particle handling is the manipulation and control of particles in various industrial processes. Fluidization is a phenomenon in which solid particles are suspended and behave like fluid when gas/fluid flows through them.

Particle handling refers to the manipulation and control of particles, typically solid particles, in various industrial processes. It involves the handling, transportation, and processing of particles for applications such as mixing, conveying, and separation. Fluidization, on the other hand, is a phenomenon in which solid particles are suspended and behave like a fluid when a gas or liquid flows through them. It is a widely used technique in industries where the efficient handling and processing of granular materials are required.

Particle handling plays a crucial role in industries such as pharmaceuticals, food processing, mining, and chemical manufacturing. The handling of particles involves tasks like loading, unloading, conveying, and storing of bulk materials. Efficient particle handling systems are designed to minimize dust generation, prevent contamination, and ensure proper flow and mixing of particles. Various equipment, such as conveyors, hoppers, silos, and feeders, are used to facilitate particle handling processes.

Fluidization, on the other hand, is a phenomenon that occurs when a gas or liquid is passed through a bed of solid particles. When the fluid flow rate is sufficient, the pressure drop across the bed causes the particles to suspend and behave like a fluid. This state is known as a fluidized bed. Fluidization offers several advantages in particle handling processes. It enhances mixing and heat transfer, promotes uniform particle distribution, and improves the efficiency of processes like drying, coating, and combustion.

In conclusion, particle handling refers to the management and manipulation of solid particles in industrial processes, while fluidization is the suspension of solid particles in a fluid-like state. Both concepts are vital in various industries to ensure efficient handling, transportation, and processing of particles. The proper design and implementation of particle handling and fluidization techniques contribute to improved productivity, quality, and safety in industrial operations.

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The property of water that allows it to dissolve many substances is its polarity.

What is polarity?

Polarity refers to the distribution of electrical charge in a molecule. A polar molecule has an uneven distribution of electrons, resulting in a partial positive charge on one end of the molecule and a partial negative charge on the other end. This creates a dipole moment in the molecule.

Water molecules are polar, meaning that the electrons in the molecule are not distributed evenly, resulting in a partial positive charge on one end of the molecule and a partial negative charge on the other end.

This polarity allows water molecules to form hydrogen bonds with other polar or charged molecules, such as ions and polar compounds. This type of bonding allows many substances, such as salt and sugar, to dissolve in water.

Additionally, the polarity of water molecules also allows them to interact with nonpolar substances through London Dispersion Forces, which also allows some nonpolar substances to be dissolved in water.

Hence, the polarity of water allows it to dissolve many substances.

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Answer:

the answer is c

Explanation:

My reasoning is that its most likely

Hydrolysis is the method used to convert starch molecules into monosaccharides.

A complex carbohydrate called starch is made up of lengthy chains of the glucose molecule. A polysaccharide structure is created by the glycosidic linkages that bind these glucose molecules together. Plants frequently store carbohydrates in the form of starch, which they use as an energy source.

The glycosidic linkages in the starch molecule are broken when water molecules are introduced during hydrolysis. In this process, a glucose unit receives a hydroxyl (OH) group from a water molecule and a neighbouring glucose unit receives a hydrogen atom (H) from the same water molecule.

The hydrolysis reaction in the instance of starch results in glucose as the monosaccharide unit. A monosaccharide, glucose is easily metabolised by cells and utilised as an energy source. The starch can be transferred across cell membranes and used for numerous metabolic activities after being digested into glucose molecules.

In living organisms, the digestion of carbohydrates frequently involves the process of hydrolysis. Amylase enzymes in the human digestive system catalyse the hydrolysis of starch, converting it to glucose and other simple sugars the body can absorb.

The hydrolysis of other polysaccharides, like glycogen and cellulose, can also produce monosaccharides. Depending on the polysaccharide being hydrolyzed, different enzymes may be used, and different monosaccharides may be produced.

Therefore, hydrolysis is the chemical process that converts starch molecules into monosaccharides like glucose.

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The compound shown is acetylsalicylic acid, more commonly known as aspirin.

This synthetic carboxylic acid is prepared from salicylic acid and is widely used as an analgesic (pain reliever), antipyretic (fever reducer), and anti-inflammatory medication. Aspirin belongs to the class of nonsteroidal anti-inflammatory drugs (NSAIDs) and works by inhibiting the production of prostaglandins, which are responsible for pain, inflammation, and fever. It is commonly used to relieve mild to moderate pain, such as headaches, toothaches, menstrual cramps, and muscle aches. Additionally, aspirin has blood-thinning properties and is used in low doses for its cardiovascular benefits, such as reducing the risk of heart attacks and strokes.

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Answer:

To solve this problem and calculate the grams of Ni, we need to use the molar mass of Ni₂0₃ and the stoichiometry of the reaction.

The balanced chemical equation for the reaction between Ni₂0₃ and H₂ is:

Ni₂0₃ + 2H₂ → 2Ni + 3H₂0

From this equation, we can see that 1 mole of Ni₂0₃ reacts to produce 2 moles of Ni. Therefore, we can use the following conversion factor:

1 mole Ni₂0₃ = 2 moles Ni

We can also use the molar mass of Ni₂0₃ to convert grams of Ni₂0₃ to moles of Ni₂0₃:

54.3 g Ni₂0₃ x (1 mole Ni₂0₃ / 165.38 g Ni₂0₃) = 0.3284 moles Ni₂0₃

Now, we can use the conversion factor to find moles of Ni:

0.3284 moles Ni₂0₃ x (2 moles Ni / 1 mole Ni₂0₃) = 0.6568 moles Ni

Finally, we can use the molar mass of Ni to convert moles of Ni to grams of Ni:

0.6568 moles Ni x (58.69 g Ni / 1 mole Ni) = 38.53 g Ni

Therefore, the grams of Ni in 54.3 g Ni₂0₃ is 38.53 g Ni.

Explanation:

The correct option would be that oxygen, nitrogen, and carbon dioxide cannot react with one another.

The components of atmospheric air, nitrogen, oxygen, carbon dioxide, etc., cannot react with one another because there is not enough energy in the atmosphere to set the reaction rolling.

For a reaction to take place, there must be enough energy to break the bonds in each air component. This is why the air components will not spontaneously react with one another, except during special events such as lightning and thunder.

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Based on the moles of iron given, the mass of iron that participated in the chemical reaction is 4.48 g.

The mass of iron that took part in the reaction is determined from the molar mass and the moles of iron that took part in the reaction.

The moles of iron that took part in the reaction = 0.08 moles

The molar mass of iron = 56 g/mol

The formula below gives the relationship between, moles, molar mass, and mass of an element.

Mass = number of moles * molar mass

The mass of iron = 0.08 moles * 56 g/mol

The mass of iron = 4.48 g

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Answer:

Happy Face excellent song

Explanation:

and gravity takes the book and pulls it to the ground

Answer:

You can find in the given attachemnet

If the temperature readings were taken at 1-min intervals instead of 30-sec intervals, the acetamide would most likely have become completely frozen at option b) 23 minutes.

1. The initial 30-sec intervals indicate that the readings were taken twice as often as they would be at 1-min intervals.

2. This means that, with 1-min intervals, the readings would be taken half as often.

3. Assuming the acetamide would take the same amount of time to freeze, but only half the readings are being taken, you would simply double the time it takes to reach the frozen state to get the equivalent time in 1-min intervals.

4. If the acetamide originally took 11 minutes and 30 seconds (or 11.5 minutes) to freeze at 30-sec intervals, you would double this time to account for the 1-min intervals: 11.5 minutes * 2 = 23 minutes.

So, the acetamide would most likely have become completely frozen at 23 minutes if the temperature readings were taken at 1-min intervals.

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C. Fast growth rate would be the most useful trait for these farmers.

Selective breeding is used to produce a crop with desired characteristics, such as a fast growth rate. A fast growth rate is beneficial to farmers in northern areas with short summer seasons because it allows the wheat to mature quickly and be harvested in a shorter amount of time, thus providing a larger yield despite the shorter growing season.Selective breeding is a process of selecting chemical compounds with specific desired properties and breeding them together to create a new compound with the desired traits. This is done by rearranging the chemical bonds between the two compounds and creating a new molecule with the desired characteristics. This process is known as chemical hybridization.

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complete question:Scientists plan to use selective breeding to produce a new type of wheat for farmers who live in northern areas with short summer seasons. Which of these traits would be MOST useful for these farmers?

a.large seed size

b.long stem length

c.fast growth rate

d.shallow root systems

Answer:

Combustion reaction

Explanation:

Combustion reactions always form water and CO2.

Answer: a, 1 b,1 c,0

Explanation:

Answer:

A= 1

B= 1

C= 0

Explanation:

The rate of a chemical reaction can be expressed by the formula v(x) = k * a, where v(x) is the reaction rate, k is a positive constant, and a is the initial amount of the compound. This formula shows that the reaction rate varies depending on the initial amount of the compound.

The main answer to your question is that the reaction rate can be calculated using the formula v(x) = k * a. This formula provides a mathematical representation of how the rate of a chemical reaction changes with the initial amount of a certain compound.

Chemical kinetics is the branch of chemistry that studies the rates at which chemical reactions occur and the factors that influence those rates. It explores the mechanisms by which reactant molecules rearrange to form products, as well as the factors that affect reaction rates, such as concentration, temperature, pressure, and catalysts.

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The mass number of atoms is calculated by adding the number of neutrons and protons.

The smallest piece of stuff that makes up an element is an atom. It consists of a nucleus with protons and neutrons and orbitals with a specific number of electrons surrounding it. One can identify and distinguish an element's atom from the others by knowing the nuclear makeup of a certain atom. In actuality, the periodic table was created expressly to organize the elements in terms of their atomic and mass numbers and nuclear compositions.

According to the periodic chart, an atom's nuclear composition is closely related to its atomic and mass number. The number of protons in the nucleus or the number of electrons around an atom determines its atomic number for neutral atoms. The amount of components inside the nucleus affects the mass number, meanwhile. The total number of protons and neutrons in the nucleus is used to calculate it. As an illustration, the mass number of the element helium is 4, as its atom has two protons and two neutrons in its nucleus.

Therefore, the correct option is (d).

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The BEST advice that Li may give Riviera is 'she should pay her bills on time'. It is a good practice to maintain finances in good order.

Personal finance refers to how a person manages his/her money as well as saving and investing.

Paying bills on time is a fundamental issue for taking control of your money and thus controlling your financial life.

Some key tips to maintain finances in order include:

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Answer:

A. The birthrate is higher than the death rate

Explanation:

Answer:

Answer and Explanation: To determine the number of moles of silver (Ag), we simply need to divide the number of atoms of Ag by the Avogadro's number, N , which is equal to 6.02 10 atoms of Ag per mole of Ag. Therefore, c) 6.3 moles of Ag are present in a sample of 3.8 10 atoms Ag.

Answer:

I hope this is right :)

empirical formula ---› molecular formula

Answer:

0.57

Sig Figs

2

Decimals

2

Scientific Notation

5.7 × 10-1

Words

zero point five seven

Explanation:

Answer:

2

Explanation:

Noble gas electron configuration for  ion silver, Ag+ is Ag⁺ = [Kr] 4d¹⁰

Noble gas Electronic configuration for Ag is :

atomic number of silver, Ag is 47.

¹⁰⁸Ag₄₇ = 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s²  4p⁶ 4d⁹ 5s²

there is exception : Half filled and full filled d orbital are more stable than the one electron is less. so one electron moves from s orbital to d orbital to make it more stable. so the correct electronic configuration is as follows :

¹⁰⁸Ag₄₇ = 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s²  4p⁶ 4d¹⁰ 5s¹

now for Ag⁺ , we loose one electron. so, the electronic configuration is :

Ag⁺  = 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s²  4p⁶ 4d¹⁰

noble gas configuration for Ag⁺ ion is as follows:

Ag⁺ = [Kr] 4d¹⁰

Thus, Noble gas Electronic configuration for Ag is : Ag⁺ = [Kr] 4d¹⁰ , Ag+ is Ag⁺ = [Kr] 4d¹⁰

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During alpha decay, the process of alpha decay results in the atomic number decreasing by two units.

Alpha decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle, which is a helium nucleus.

During alpha decay, the atomic number of the element decreases by two units and the mass number decreases by four units, because an alpha particle has two protons and two neutrons.

The decay of a radioactive element by alpha decay reduces the atomic number by two units and decreases the atomic mass by four units.

Because alpha particles are positively charged helium nuclei with two protons and two neutrons, they contain two fewer electrons than their parent nuclei. The loss of two electrons, or a positive charge of +2, results in a reduction of the atomic number by two units.

Thus, atomic number decreases by 2 units during an alpha decay.

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Answer:0

Explanation: zero because it is the most stable form of oxygen in its standard state

In chromatography,when all the three samples have atleast one substance common it is indicated by Rf values which are same for the 3 samples as they have one substance common in them.

Chromatography is a separation technique which is generally used for separating substances  based on their solubilities. The technique makes use of two phases the mobile phase and the stationary phase.

The components are separated from each other based on their solubility in the mobile phase. Component which is least soluble does not travel along the mobile phase while component which is highly soluble travels with the mobile phase.

The difference in the solubility of the components is measured with the reference to the solvent front and is expressed in terms of Rf value.

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1. Calcium has an atomic number of 20 and phosphorus has an atomic number of 15, while radium has an atomic number of 88. This can be used to determine which element was most likely deposited in the workers' bones in place of calcium.

2. Calcium. This is because calcium is an element with an atomic number of 20, meaning it has 20 protons in its nucleus. It is also found in abundance both in the human body and in many foods, making it easy to obtain and store in the body.

Characteristics of Calcium Ions:

- Has a charge of +2

- Located in column 2 of the periodic table

- Atomic number of 20

Reasons it could be Phosphorus:

- Has a charge of +3

- Located in column 3 of the periodic table

- Atomic number of 15

Reasons it couldn't be Phosphorus:

- Has a higher charge than calcium

- Has a different atomic number than calcium

Reasons it could be Radium:

- Has a charge of +2

- Located in column 7 of the periodic table

- Atomic number of 88

Reasons it couldn't be Radium:

- Has a different atomic number than calcium

- Is located in a far different column than calcium on the periodic table

Conclusion
Based on the evidence, it is likely that the source of the poisoning was radium, and from a chemistry perspective, the shop owners were responsible for exposing the workers to this element and, as such, are responsible for their illnesses.